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"I was just so happy, ...I was jumping up and down in the lounge watching him."

Fairbairn and her husband Lyndon moved to Singapore in 2014 where she was heading up the Singapore's elite sports centre. Schooling was based in Texas studying at the university when she contacted him to become his dietitian.

The pair communicate mostly through Whatsapp and Skype.

"I make sure he's on track and reassure him. A big part of my job is to encourage motivate and empower him.

"I told him, I want you standing up on the blocks, knowing you have done everything you can and you are as well-prepared as you can be."